Boil the potatoes

• Peel and cut the potatoes, then boil them in salted water until super tender.
• Drain well.

Mash the potatoes

• Pass the potatoes through a ricer or a strainer and mash until smooth.

Make the dough

• Add the glutinous rice flour, butter and milk to the mashed potato and stir until combined.

Shape the patties

• Portion the mixture into 6-7 balls and flatten into patties.
• Wrap each patty with a nori sheet if you like, then set aside.

Make the soy glaze

• In a small saucepan, combine the soy sauce, mirin, sugar and water.
• Simmer to reduce, then remove from the heat and stir in the butter.

Fry the potato mochi

• Heat the oil in a pan over medium heat and fry the patties on each side until golden brown.
• Remove the excess oil from the pan.

Coat in sauce and serve

• Off the heat, add the soy sauce mixture and the butter to the pan.
• Flip each patty to coat in the sauce.
• Serve and eat right away.